13112144 has 10 divisors (see below), whose sum is σ = 25404810. Its totient is φ = 6556064.

The previous prime is 13112129. The next prime is 13112153. The reversal of 13112144 is 44121131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 7744 = 3620^2 + 88^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409739 + ... + 409770.

It is an arithmetic number, because the mean of its divisors is an integer number (2540481).

Almost surely, 2^13112144 is an apocalyptic number.

It is an amenable number.

13112144 is a deficient number, since it is larger than the sum of its proper divisors (12292666).

13112144 is an equidigital number, since it uses as much as digits as its factorization.

13112144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819517 (or 819511 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 13112144 is about 3621.0694552853. The cubic root of 13112144 is about 235.8076571274.

Adding to 13112144 its reverse (44121131), we get a palindrome (57233275).

The spelling of 13112144 in words is "thirteen million, one hundred twelve thousand, one hundred forty-four".